From: David Hildenbrand <david@redhat.com>
To: "Richard W.M. Jones" <rjones@redhat.com>
Cc: Richard Henderson <richard.henderson@linaro.org>, qemu-devel@nongnu.org
Subject: Re: [PULL 11/24] tcg/optimize: Use tcg_constant_internal with constant folding
Date: Thu, 4 Feb 2021 10:37:34 +0100 [thread overview]
Message-ID: <b94570e3-9f87-d259-a338-adef1d552d1a@redhat.com> (raw)
In-Reply-To: <20210204092916.GS27779@redhat.com>
On 04.02.21 10:29, Richard W.M. Jones wrote:
>>> commit 8f17a975e60b773d7c366a81c0d9bbe304f30859
>>> Author: Richard Henderson <richard.henderson@linaro.org>
>>> Date: Mon Mar 30 19:52:02 2020 -0700
>>>
>>> tcg/optimize: Adjust TempOptInfo allocation
>>>
>>> The image boots just fine on s390x/TCG as well.
>>
>> Let me try this in a minute on my original test machine.
>
> I got the wrong end of the stick as David pointed out in the other email.
>
> However I did test things again this morning (all on s390 host), and
> current head (1ed9228f63ea4b) fails same as before ("mount" command
> fails).
>
> Also I downloaded:
>
> https://dl.fedoraproject.org/pub/fedora-secondary/releases/33/Cloud/s390x/images/Fedora-Cloud-Base-33-1.2.s390x.qcow2
>
> and booted it on 1ed9228f63ea4b using this command:
>
> $ ~/d/qemu/build/s390x-softmmu/qemu-system-s390x -machine accel=tcg -m 2048 -drive file=Fedora-Cloud-Base-33-1.2.s390x.qcow2,format=qcow2,if=virtio -serial stdio
>
> Lots of core dumps inside the guest, same as David saw.
>
> I then reset qemu back to 8f17a975e60b773d ("tcg/optimize: Adjust
> TempOptInfo allocation"), rebuilt qemu, tested the same command and
> cloud image, and that booted up much happier with no failures or core
> dumps.
>
> Isn't it kind of weird that this would only affect an s390 host? I
> don't understand why the host would make a difference if we're doing
> TCG.
I assume an existing BUG in the s390x TCG backend ... which makes it
harder to debug :)
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2021-02-04 9:39 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-14 2:16 [PULL 00/24] tcg patch queue Richard Henderson
2021-01-14 2:16 ` [PULL 01/24] tcg: Use tcg_out_dupi_vec from temp_load Richard Henderson
2021-01-14 2:16 ` [PULL 02/24] tcg: Increase tcg_out_dupi_vec immediate to int64_t Richard Henderson
2021-01-14 2:16 ` [PULL 03/24] tcg: Consolidate 3 bits into enum TCGTempKind Richard Henderson
2021-01-14 2:16 ` [PULL 04/24] tcg: Add temp_readonly Richard Henderson
2021-01-14 2:16 ` [PULL 05/24] tcg: Expand TCGTemp.val to 64-bits Richard Henderson
2021-01-14 2:16 ` [PULL 06/24] tcg: Rename struct tcg_temp_info to TempOptInfo Richard Henderson
2021-01-14 2:16 ` [PULL 07/24] tcg: Expand TempOptInfo to 64-bits Richard Henderson
2021-01-14 2:16 ` [PULL 08/24] tcg: Introduce TYPE_CONST temporaries Richard Henderson
2021-01-14 2:16 ` [PULL 09/24] tcg/optimize: Improve find_better_copy Richard Henderson
2021-01-14 2:16 ` [PULL 10/24] tcg/optimize: Adjust TempOptInfo allocation Richard Henderson
2021-01-14 2:16 ` [PULL 11/24] tcg/optimize: Use tcg_constant_internal with constant folding Richard Henderson
2021-01-15 23:03 ` Alistair Francis
2021-01-16 17:24 ` Richard Henderson
2021-01-18 20:17 ` Laurent Vivier
2021-01-18 21:03 ` Richard Henderson
2021-02-01 20:45 ` Richard W.M. Jones
2021-02-01 20:53 ` Richard W.M. Jones
2021-02-04 2:22 ` Richard Henderson
2021-02-04 6:41 ` David Hildenbrand
2021-02-04 7:55 ` David Hildenbrand
2021-02-04 8:38 ` David Hildenbrand
2021-02-04 9:03 ` Richard W.M. Jones
2021-02-04 9:12 ` David Hildenbrand
2021-02-04 9:29 ` Richard W.M. Jones
2021-02-04 9:30 ` Richard W.M. Jones
2021-02-04 9:37 ` David Hildenbrand [this message]
2021-02-04 16:04 ` Philippe Mathieu-Daudé
2021-02-04 16:08 ` Philippe Mathieu-Daudé
2021-02-04 16:12 ` David Hildenbrand
2021-02-04 16:29 ` David Hildenbrand
2021-02-04 16:57 ` Eric Blake
2021-02-04 17:33 ` Richard Henderson
2021-02-04 16:48 ` Richard W.M. Jones
2021-02-04 16:52 ` Eric Blake
2021-01-14 2:16 ` [PULL 12/24] tcg: Convert tcg_gen_dupi_vec to TCG_CONST Richard Henderson
2021-01-14 2:16 ` [PULL 13/24] tcg: Use tcg_constant_i32 with icount expander Richard Henderson
2021-01-14 2:16 ` [PULL 14/24] tcg: Use tcg_constant_{i32,i64} with tcg int expanders Richard Henderson
2021-02-10 10:38 ` Alex Bennée
2021-01-14 2:16 ` [PULL 15/24] tcg: Use tcg_constant_{i32,i64} with tcg plugins Richard Henderson
2021-01-14 2:16 ` [PULL 16/24] tcg: Use tcg_constant_{i32,i64,vec} with gvec expanders Richard Henderson
2021-01-14 2:16 ` [PULL 17/24] tcg/tci: Add special tci_movi_{i32,i64} opcodes Richard Henderson
2021-01-14 2:16 ` [PULL 18/24] tcg: Remove movi and dupi opcodes Richard Henderson
2021-01-14 2:16 ` [PULL 19/24] tcg: Add tcg_reg_alloc_dup2 Richard Henderson
2021-01-14 2:16 ` [PULL 20/24] tcg/i386: Use tcg_constant_vec with tcg vec expanders Richard Henderson
2021-01-14 2:16 ` [PULL 21/24] tcg: Remove tcg_gen_dup{8,16,32,64}i_vec Richard Henderson
2021-01-14 2:16 ` [PULL 22/24] tcg/ppc: Use tcg_constant_vec with tcg vec expanders Richard Henderson
2021-01-14 2:16 ` [PULL 23/24] tcg/aarch64: " Richard Henderson
2021-01-14 2:16 ` [PULL 24/24] decodetree: Open files with encoding='utf-8' Richard Henderson
2021-01-14 13:13 ` [PULL 00/24] tcg patch queue Peter Maydell
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